08085516  7800 ldrb r0, [r0, #0x0] - loads defense bonus from a tile

0808553a  7800 ldrb r0, [r0, #0x0] - loads avoid bonus from a tile

The defense bonus for forts, at least for the chapter with Renault, is stored at 0x8be4544

Avoid bonus for same tile stored at 0x8be4503
