Following the zerg around in siege warfare isn’t the only thing you can do as a Guardian.
My guildies and I like to do “hit and run” attacks on dolyaks and supply camps, control points, etc. with a 5 man group. My job is to charge in like Galahad, and scatter the enemy group while a mesmer, thief, and/or elementalist pick them off as they run. With this we have wiped camp defenders in 2 vs 6, 3 vs 8, 4 vs 10. Even if it’s a vent coordinated guild group vs a disorganized group of pugs, it’s still quite satisfying.
I run an offensive 10/30/30/0/0 sword&shield/scepter&torch triple meditation build for this and it is quite effective for short camp and control point fights.