Just generalising from other C&C games, and particularly Samurai Battles, these are my hunches
If the 'Direct from HQ' command card if played (pay 1 HQ token to order each unit) and the opponent responds with 'Lost Messenger' (the number of units ordered this turn is reduced to 1)
This combat card says to play in reaction to opponents command card. Would this be before the HQ tokens or after are paid? Does this result in the first player losing all their HQ tokens?
My view is that the sequence runs
1. Command card is played
2. Response card is played after Command Card
3. Units are ordered (and HQ tokens paid)
effect is payment is made after Command is reduced.
Also if the 'Strike First' command card is played (Play before close combat to battle first) can this be followed by the 'Battle Fury' combat card (Play after successful close combat to gain ground and make second close combat)
Usually only ordered units can gain ground. First Strike doesn't normally allow gain ground, and is not a normal close combat, it is rather a battle back combat, but made preemptively. Ergo Battle Fury is not eligible to be used unless it can be used for all Battle Back combats, which would be counter to normal C&C rules.