The military specifications are being converted to commercial specifications where possible. For fusion welding, MIL-2219 is now controlled by the SAE (Society of Automotove Engineers) and is AMS-STD-2219. They are essentially identical except for format.
For qualifying welders and welding operators MIL-1595 is now AMS-STD-1595.
You can order them from www.sae.org. When you do a search, omit the dashed so you would look for AMSSTD2219.
Regards