Wiktionary
vb. (en-third-person singularpack on)
Usage examples of "packs on".
The Marines had gone aboard the troopships in neat files, packs on their backs and rifles slung, gear boxed to be swung from dock to hold.
Each year they came trekking up the Hainlin, sometimes only a handful carrying their wares in packs on their backs, sometimes a train with beasts of burden.
He was so drunk that I thought for a moment he might fall asleep on his feet, but he snapped to and found some rope and quite deftly tied our packs on the roof.
But we put high-tech survival packs on every horse, and we use the latest technology in slaughtering and packing.
He shifted the heavy packs on his shoulder, glad he was neither a pack animal nor a soldier, not usually, and looked down the road, momentarily empty except for them.