Starting from left to right:
Button down belted shirt dresses (DAY Birger) are another military inspired piece as well as these suede knee high boots with button embellishments (FENDI). Wear something similar with this belted coat (TOPSHOP) and it's a surefire way to wear this trend.
This double breasted blazer (BALMAIN BLAZERS) would look great with a pair of khaki colored skinny pants (TOPSHOP). You can wear something like this with a plain shirt underneath and then accessorize with a military vintage scarf (CODELLO), tassel ankle booties (STEVE MADDEN) and a military tote (MARC JACOBS)
Military parkas (SCOTCH & SODA) are a great way to wear this trend without using the obvious button/belted style jackets. For a more casual style, wear this parka over a sweater with shoulder embellishments (CARVEN), a pair of dark denim skinny jeans (CITIZENS) and combat boots (ALL SAINTS).
For something a little different, if you want to take this trend a little further, try wearing military inspired trousers (MALENE BIRGER) with a silk button down (CHLOE), military pin (BKE BROOCHES), lace up booties (TORY BURCH), and a handbag like this one (ZADIG & VOLTAIRE).
Another popular military inspired piece are hats like this (KERIN ROSE). It would look great with a shoulder embellished cardigan (HOTEL PARTICULIER), black leggings (WAREHOUSE), and lace up booties (SAINTS OF FASHION).
Another surefire way to rock this trend are with longer length coats that have belts/buttons (T.BABATON) and knee high/over the knee boots (BCBG). This is great if you are looking to be "military chic."
I hope this helped and that it inspires you to try out this trend! :)