I had no problems last night (Friday). I did have problems on Thursday, adding any records, not specifically military.
Today, Saturday, the issues have returned, trying to link a census record. Various browsers, 2 different computers, I continually get the "We apologize, but we were unable to handle your request. Please try again later." message.
Since it is an 1870 census, I live in hope that means they might be fixing what has been broken in the 1870 census citation for ages.