Hi thanks for contacting healthcare magic.... Noted herediatery spherocytosis is cause for congenital hemolytic anemia... Your child s spleen and gall bladder removed. So he might have more chances of bacterial infection like pneumococci, h.influenza etc. So its vaccine taken if feasible and advise by doc. As gall bladder removed he is advised yo take low fat diet.... Although he is alright right now but army not advisable....Still if he joins army care taken regarding taking low fat diet and whenever fever consult army doctor immediately ... In the fitness certificate country rules has to be read whether he is eligible for army in your country or not. Take care. Hope your concern solved.