工兵

工 = 二 + 丨 : Mnemonic symbol: a steel beam, since 工 looks like the cross section of a steel beam.

Gitta Giraffe (gu) is working a shift in front of the engine ((e)ng1). Her job is to melt dinosaur bones (丨) so that they can be disposed off easily. To melt the bones, she is shorting a huge capacitor (二) with a steel beam (工) which consequently heats up to a bright glow. Using the glowing hot steel beam she can melt the dinosaur bone easily.

兵 = 丘 + 八 : Brunhilde and the soldier visit a burial mound in front of the engine. It is round like a ball like the deceased inside. To commemorate the round fallen soldier they put up a big eight-ball.