pf2e.fyi
From Pathfinder Kingmaker, which isn't enabled.

Guard

ARMY WAR ACTION
Activity 1 action

Your army spends a war action to adopt a defensive pose—raising shields, focusing on parrying attacks, or seeking cover. Attempt a Maneuver check check against a target army.

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.

Effect: Guard (Critical Success)

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

Effect: Guard (Success)

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.

Pathfinder KingmakerOGL