Yes, they should. To be accepted into the military, you must first pass tests to make sure you can survive in combat. If a man passing these tests can stay alive, so can a women fulfilling the same requirements. Females cannot currently serve in combat, but to say one could not be an effective service member would be archaic and sexist. Should females be drafted? I think not, since many girls are indeed not fit for combat, but those who are should be given the choice.
In combat roles, no. Call it sexism call it what you will but male and female of any species are built physically an mentally different and their roles should reflect that. Ask an honest male police officer if the women he serves with in the field are as effective as the male officers. You'll get your answer.
No women are flighters , they wouldn't pull the trigger that a man could on a child with a bomb , I would rather have a man protected me than a women even if they are physically equal , women have a more feminine mentality to be able to kill , even so , women in military should do the exact same test a man has to do , not something less , if you want a mans job you better work the same , it's lie women saying I want equal rights , Hey don't hit me I'm a girl .