Counting units lags a cycle

Bring and Command are the conditions that count units. Both read their number from a tally the game rebuilds once per pass. So if you CreateUnit and count in the same pass, you get zero: the unit is plainly there and the condition says it is not.

This bites hardest in checks like a minimum player count. Hand every player a unit at game start, count those units immediately, and you read zero players every time - so a legitimate game is defeated. The fix is to move the check later: to the moment the first wave is released, for instance.

Which of the two you use also matters. Bring counts only what stands inside a location, so it depends on that location - and a unit that flies, or sits at a different elevation, can disagree with it. Command counts what a player owns wherever it is, and its AtMost form is the most inclusive of all: it counts units inside transports, buildings under construction and units in production.

// 위치에 의지하지 않고, 가장 넓게 셉니다
if (Command(Force1, AtMost, 2, builder)) { tooFew = 1; }

AtMost being more inclusive is not a figure of speech: the same condition counts different things depending on the comparison. This is the other source of "there is plainly one there and the condition disagrees".