Individual First Aid Kit
The term IFAK can be explained as: Infantry/Individual/Improved First Aid Kit. In general it refers to a set of basic medical equipment every player should be given by a mission maker.
As most mission makers lag a clear understanding of how the medical module of ACE3 exactly works players end up with different IFAKs through the collection missions we have running on UOs primary server.
It is sensible to go with the suggestion given in the wiki of the mod providing the medical system.
Though (if the advanced medical model is used) mission makers should be reminded to keep an eye upon the fact that for a platoon 3 liters of additional fluid (saline preferred) are hardly anywhere enough, considering the fact that ACE3 supplies each character with a blood volume of 6.141 Liters of blood which is quickly lost when severely injured.