all able bodied men, 17 to 45 of age, are ultimately eligible to be called up into military service and belong to the class known as the reserve militia, also known as the unorganized militia (10 usc). able bodied men who are not eligible for inclusion in the reserve militia pool are those aliens not having declared their intent to become citizens of the united states (10 usc 246) and former regular component veterans of the armed forces who have reached the age of 64 (32 usc 313). all female citizens who are members of national guard units are also included in the reserve militia pool ().