D&D4 Wiki
Attack bonus if proficient +2
Weapon die ([W]) 1d10
Type melee
Handedness two-handed
Proficiency category military
Weapon groups
Weapon property reach
Price 25 gp
Weight 12 lb.

A halberd is a military two-handed melee weapon in the axe and polearm weapon groups.[PH:218][MME:21]

A halberd has reach, so a character wielding it can make attacks other than opportunity attacks on enemies either 1 or 2 squares away.

Ardents, avengers, barbarians, battleminds, fighters, paladins, rangers, wardens, and warlords are proficient with all military melee weapons, including the halberd.

Other classes do not have proficiency with the halberd as a class trait, but any character can become proficient by taking a Weapon Proficiency feat.