During that invasion event, the ranking npcs (LT, GEN, etc..) dropped weapons with 30, 35, 40, 45, and 50 SSI (based on their "profession", and scaled with their rank).
The weapons you could obtain were:
katana
scimitar
broadsword
viking sword
dagger
kryss
bow
crossbow
heavy crossbow
club
war mace
war hammer
All of the melee weapons had Hit Lightning (max 30%) and DI (up to 55%). The bows have HLD (max 30%) and the DI. They cannot be enhanced, but can be imbued (only 450 points though).
Additionally, the Mage and Healers would drop Magery spellbooks of two kinds (of the following max properties):
Reddish Colors (up to): MR 3, SDI 30%, LRC 10%;
Bluish Colors (up to): DCI 10%, SDI 30%, FCR 2, LMC5%
Stayin Alive,
BG