There is a sight that has free military designs but for the life of me I can't think of it atm. They also have pet adoption designs. Maybe someone else can think of the site knowing that. I am sorry I don't know atm but I will look when I am rested up. Hugs
I ordered all of my military seals from here and the stitch out was perfect. Just make sure you download the color charts. My machine had weird colors on it.
I purchased several USMC designs from them and they all stitched beautifully. I included the links below.
I have a somewhat old Dakota Designs set, # 970126, called Armed Forces. I am confident they cleared all permissions needed and the designs are beautiful, stitch out well and SO impressive. I am wondering if you can buy just the design you need there, instead of the whole set.
The site has to be safe with vendors like Ace Point, Dakota etc. I can not say anything about the stitch out. Some well known vendors belong to this site, so I imagine it would be OK.
www.dakotacollectibles.com has wonderful armed forces designs and they stitch out great. I have used several of them as i have the whole design library.