I, Achitophel, advise that we go after David while he's tired from fleeing.
I, Chushai, advise that you gather a giant army and then destroy David's army.
I agree with you!
Chushai sends word to David about the plans, and David decides to move his camp.
Okay everyone, it's time to move across the Jordan.
Avshalom's army also crossed the Jordan and "The Israelites and [Avshalom] encamped in the district of Gilead" (2 Samuel 17:26)
David's army goes out to fight Avshalom.
Fine.
Let's prepare for battle, everyone, but "Deal gently with my boy [Avshalom], for my sake" (2 Samuel 18:5)
You're not coming.
"[Avshalom] encountered some of David's followers. [Avshalom] was riding on a mule, and as the mule passed under the tangled branches of a great terebinth, his hair got caught in the terebinth; he was held between heaven and earth as the mule under him kept going (2 Samuel 18:9)
*The mule looked a lot like a donkey, at least in this rendition of the tale
Yoav ordered that Avshalom be killed. Afterward, two messengers went to tell David about the battle.