Guard

Critical Success Your army gains a +2 item bonus to its AC until the start of your next turn; this bonus applies to all attacks against this army, not just from the targeted army.

Success Your army gains a +2 item bonus to its AC until the start of your next turn against attacks from the target army.

Failure Your army fails to guard against the target army.

Critical Failure Your army fails spectacularly to guard against the target army and becomes mired 1.