You know the "pop smoke" idea seems equally reasonable but I'm certain that wouldn't work with the code either.
Just gets annoying when you gather up damaged infantry squads, scouts, lagging MGs and AT Inf with the plan of dropping them off in an area supposedly long secured just to discover that a single unit has been missed. Super massive hugely annoying when that unit is an MG which proceeds to riddle 2 scouts, 1 inf squad (damaged), 1 AT Inf, and 2 MGs!