The Dambuster Raid
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Enemy Coast Ahead The Dambuster Raid 617 Squadron’s maiden ight design by Jeremy White scenario book table of contents Introduction 2 Scenario 6: Flight of the Diversionary Force 20 Attack Scenarios 2 Scenario 7: Flight of the Main Force 23 Scenario 1: Attack on Möhne Dam 3 Scenario 8: Flight of the Reserve Force 26 Scenario 2: Attack on Eder Dam 6 Scenario 9: The Dambuster Raid 29 Scenario 3: Attack on Sorpe Dam 9 Scenario 9: Follow-Up Raid 35 Scenario 4: Second Attack on Sorpe Dam 12 Scenario 10: The Campaign Game 36 Scenario 5: Attack on Ennepe Dam? 15 Scenario 10: Follow-Up Raid? 42 Combining Attack Scenarios 18 Multi-Player Games 43 Flight Scenarios 19 Design Notes and Credits 46 GMT Games, LLC P.O. Box 1308, Hanford, CA 93232-1308 www.GMTGames.com 2 Introduction There are ten scenarios. The first five are presented chronologically to study the tactical action at the dams, incorporating only the rules of Part 1 [rule sections 1.0-5.0]. Except for Scenario 1 they are brief affairs, good for learning the game but mainly intended to present each fragment of the raid as it was about to happen. Each includes a unique Debriefing Chart. For a more prolonged experience, attack scenarios may be combined, thus capturing the entirety of the raid while provid- ing more game [p.18]. If you are new to Enemy Coast Ahead, Scenario 5 is a good place to start [p.15]. Scenarios 6-8 add the rules of Part 2 to those already learned, and make full use of the Flight Map. They explore the fate of the three forces launched on the night of May 16, 1943. Scenario 9 treats the flights and attacks of all three forces as a whole, the complete historical scenario depicting 617 Squadron’s first mission, the famous Dambuster Raid in its entirety. A variant of Scenario 9 allows you to deviate from the squadron’s historical organization. Scenario 10 is the complete game, the “Campaign Game,” incorporating Part 3 of the rules. It abstractly treats the planning that led to the raid, and allows control over the organization and training of 617 Squadron and the assignment of targets. setting up Set up instructions are provided for each scenario, including a brief historical narrative. outcomes[5.3] Each scenario has a Debriefing Chart with “outcomes”. Generally, the higher up the chart your outcome, the more success- ful your mission. Historical outcomes are boxed. Locate your outcome by reading the Debriefing Chart left to right, column by column. Each column poses a question that will lead you to the next column until you find your specific outcome. For example, in Scenario 1 [p.5] you first must answer the question of the dam’s status, breached or not breached (first column). Then, you must tally the number of Lancasters that survived the scenario, and then tally the number of ordnance still carried by your Lancasters (2nd & 3rd columns). Thus, if you breached the dam, had 4 Lancasters returned to base or still flying to Eder Dam, and still had 3 Upkeep in play, your outcome would be “worth the price?” attack scenarios (scenarios 1-5) aircrew training levels [4 2.2, 4.2.3, 4.2.13] Record the training levels of your aircrews on the Train- ing Level Track located on the Mission Planning Blotter approach and release chits [2.6] on the extreme left of the mapsheet. Use Training Level When you set up, organize these approach markers, as shown on the set up page of each scenario. approach chits into two groups, altitude and mph 53ft 239 approach 1 The aircrew training levels for Scenarios 1-9 are as follows: speed, and place them in respective 2 chitsoach chit mph 65ft opaque containers. You will 2 chits green seasoned veteran randomly draw these chits during altitude speed Green Seasoned Veteran the Approach & Release Sequence. aircrew aircrew aircrew 1 2 3 elite crewmen [2.3] You are welcome to use the historical crewmen, or select navigation them at random. If you prefer random selection, for every 2 3 5 crewman you are allowed, draw two others and select one (do this one at a time and put the other two back in the altitude cup). & speed 2 3 5 special rule -- widening the breach If you breach a dam, you may release more Upkeep against bomb-aiming 2 3 5 it in order to ensure the breach. You are permitted one & release SUCCESSFUL release and any number of unsuccessful GREEN SEASONED VETERAN releases. (This special rule is the Attack scenario’s version aircrew aircrew aircrew of rule 7.9.6 “Widening the Breach”.) training level markers training training training level level level © 2014 GMT Games, LLC 3 Scenario 1: Attack on the Mohne Dam Ruhr Valley: 0020 hours, May 17, 1943 Wing Commander Gibson flew an initial recon- Gibson ordered AJ-P commanded by Flight Officer naissance over the dam, circled, and made his Martin in next, and this time Gibson made the run on run in AJ-G. Flak from the sluice towers was AJ-P’s starboard. In order to draw flak away from “aggressive,” in the words of Gibson’s front Martin’s Lancaster, Gibson flew ahead and switched his gunner, and the sight of tracers flying past was Aldis lights back on (he was awarded the Victoria Cross endured by the pilot, navigator and bomb-aimer who were for this). Upkeep was released at the right height and working together to release AJ-G’s ordnance. The reflec- distance, but bounced to the left and exploded 50 yards tions of tracers on the glassy surface of the calm reservoir from the dam. made the flak seem to bounce off the water, which was particularly unnerving. The Lancaster approached the At 0043 AJ-A went in accompanied by Gibson’s and target at an altitude of 60 feet, the navigator watching the Martin’s Lancasters as escort, offering the German two glowing circles on the water below projected from gunners of Flak-Abteilung 840 three targets instead of twin Aldis lamps to make sure the proper altitude was being one. Squadron Leader Young flew AJ-A on course and maintained. The engineer watched the speedometer while released the mine perfectly, exploding against the dam. the bomb-aimer checked alignment, using the dam’s two By this time another flak gun had ceased to operate, its towers as landmarks framing his bomb-sight. All three barrel jammed. crewmen kept up a continual chatter for the benefit of Gibson as he steered the machine towards the target. Ten With little to no effective flak spraying tracers from the seconds later the bomb-aimer released Upkeep and the top of the dam, the next Lancaster went in as the others mine splashed onto the reservoir, bounced thrice, and circled. AJ-J released Upkeep on target, and once again a landed against the lip of the dam before sinking. As the pilot plume of debris and water spewed up. pulled the Lancaster up into a turning climb and out of range of the tracers, the mine exploded in a rush of water Gibson ordered Flight Lieutenant Shannon of AJ-L to and debris. Minutes ticked by as AJ-G circled beyond flak make the next run, but after the debris cleared he range, until Gibson determined that the dam had not belayed the order. The dam was breached! A gaping 150 actually been breached. foot hole had been punched directly in the middle of the wall, water gushing down into the valley. At 0053 the He ordered AJ-M to make the next run. Repeating the wireless operator on AJ-G transmitted codeword same process, it was hit by tracers on the approach but still “Nigger” back to 5 Group headquarters, signaling that managed to let go its ordnance. Released awkwardly, the Target X had been breached. Using the very high mine bounced over the dam, exploding on the power frequency radio set, he ordered the three Lancasters still station and its transformers below. While the concussion equipped with ordnance to follow him to the secondary knocked one of the flak guns off its base, the Lancaster target, the Eder Dam. crashed some distance from the dam. bombers & crews endnotes The scenario ends when the dam is breached, a Nightfighter Lancaster aircrew elite crewman scatters the Lancasters, or at the end of the turn when none of (if more than one is listed, select one) the Lancasters carry Upkeep. If still not over at the conclusion AJ-A veteran - of Turn 8, keep playing (Turn 1 follows Turn 8; make a new AJ-G Gibson, Trevor-Roper, Visibility Check). If you play Turn 8 a third time, the game (leader) veteran or Deering ends due to concerns about fuel limitations (i.e., they RTB). AJ-J seasoned - When it ends, Lancasters that still carry Upkeep are consid- ered to fly on to the Secondary Target (Eder Dam). Lancasters AJ-L veteran Shannon or Walker without ordnance return to base (RTB). You must resolve the fate of all RTB aircraft [player aid E1 (use the Ruhr Flight AJ-M veteran Gregory Zone modifier)], and Morning Recon [player aid E3] before (damaged) interpreting the scenario’s outcome (see the Debriefing AJ-N seasoned - Chart). The leader continues on to the Secondary Target even if not carrying ordnance. AJ-P veteran Martin difficulty AJ-Z veteran - Your biggest problem is flak, but you have plenty of bombers All carry Upkeep (draw randomly; do not peek at back).