From searching the hobgoblins, you acquire three suits of chainmail sized for a human, two spears, three longswords, and 18 arrows. The longbow's string has snapped, but such can be replaced if one had the appropriate materials. Aside from a bit of padded clothes underneath the armor, none of the hobgoblins had anything else like a cloak or robe. A total of 43 silver and 15 gold is collected.
One of the hobgoblins has a map with the same features as the one you've already collected. There is also a letter, written in the same language as one of the other letters you acquired. Comparing the two letters leads you to believe their statements are also alike.
The saddlebags on the horses contain some rudimentary camping gear, including tinderboxes, waterskins, and dry rations. A bedroll sits behind each saddle.
CancerMan sent a note to HypCo