In 1944, Lem is accidentally captured by the United States Army, who are playing a war game in the area near the lake. Lem is taken for a spy due to his Scouting equipment and is unable to prove he is a Scoutmaster after the military captain asks Lem to tie a sheepshank, the only knot Lem never learned. Across the lake, Troop 1 fires their morning cannon, accidentally signaling the military to playfully attack the boys. The scouts take shelter in a staged base and successfully capture a tank with explosive squibs, meant to resemble land mines, thus freeing Lem from the captivity of the embarrassed military.