Operation Hedge-hop

Operation Hedge-hop was a military plan developed during the Korean War. A lack of UN supplies forced American forces to use P-80 high-altitude jets as low altitude strike bombers, beginning in late 1950. The innovation paid off.
Warfront #18 (1951) featured an explanation of it, as well as in Fighting Fronts #2.
A fuller version was published in War Battles as "Aces Low!".