Not sure what the substance is in addition to estrogen, but my memory seem to recall that anything ending in SO4 is an ACID
(not the type for trips). Further, the target group (combat fatalities) are apt to be male, and I am not sure that further clouding the legal community with lawsuits, because "Uncle Sam made me GAY", while forcing me to ingest estrogen pills, will increase the enlistment rate or retention.. YMMV
Way back when I worked for a good living, I seem to remember a project we had with cow blood. Perhaps a better avenue for you to explore is Bovine Hemoglobin. It was licensed in South Africa, but I think the FDA killed the effort here, because it actually made sense. That route, at least would have turned recovering soldiers into CHARGING BULLS, rather than interior decorators or actors.
Could the female sex hormone save soldiers on the battlefield? Army funds human trials of estrogen pills that could stem blood loss