In case it helps:
Iron Brigade US Civil War

https://en.wikipedia.org/wiki/Iron_Brigade

https://www.facebook.com/photo/?fbid=993816088998771&set=a.620382019675515

Don Troiana The Black Hats 19th Reg. Iron Brigade at Gettysburg - The Art of Don Troiani | Breagans

https://breagans.com/products/don-troiana-the-black-hats-19th-reg-iron-brigade-at-gettysburg?srsltid=AfmBOoopM6Kll5K2o_AqtHKrdR1MbJaBUA_GQnTLHAQY0gszskZdkefN

Keith Rocco, "Chosen Ground", Reynolds leads the Iron Brigade at Gettysburg [1599 x 868] : r/BattlePaintings

https://www.reddit.com/r/BattlePaintings/comments/8a2yea/keith_rocco_chosen_ground_reynolds_leads_the_iron/

Men of the Iron Brigade advance through the Cornfield at Antietam, 17 September, 1862 : r/CIVILWAR

https://www.reddit.com/r/CIVILWAR/comments/16qdlja/men_of_the_iron_brigade_advance_through_the/

The Iron Brigade During the Battle of Gettysburg, 1863 by Brian Palmer. (PC) - Cranston Fine Arts

https://www.cranstonfinearts.com/art_print.php?ProdID=29371

Treefrog Treasures Military Miniatures, Toy Soldiers | King & Country, W. Britain

https://www.treefrogtreasures.com/search.aspx?searchterm=iron%20brigade

1863 Civil War Union Iron Brigade | Best Selection of Plastic and Metal Toy Soldiers, Playsets and Accessories

https://www.toysoldierco.com/Plastic-Toy-Soldiers/1863-Civil-War-Union-Iron-Brigade/Product.aspx?ProductID=6012&DeptID=1

Armies in Plastic Painted Union Iron Brigade Infantry 16 Piece Set – MicShaun's Closet

https://micshaunscloset.com/products/armies-in-plastic-painted-union-iron-brigade-infantry-18-piece-set#mz-expanded-view-1026395045534

Armies In Plastic American Civil War Union Iron Brigade 5410

https://www.toysoldiersdepot.com/store.php/thedustyloft/pd7614874/armies-in-plastic-american-civil-war-union-iron-brigade-5410


San Patricio Battalion
US deserters (and other nationalities) form a battalion in Mexican Army during Mexican War. Very cool story and uniforms. If you continue with 1840s US era.

Saint Patrick's Battalion - Wikipedia

https://en.wikipedia.org/wiki/Saint_Patrick%27s_Battalion

All honor to the San Patricios, the St. Patrick’s Battalion – People's World

https://www.peoplesworld.org/article/all-honor-to-the-san-patricios-the-st-patricks-battalion/

Saint Patrick's Battalion which fought for the Mexican army during the Mexican-American War - author unknown : r/BattlePaintings

https://www.reddit.com/r/BattlePaintings/comments/11jcpof/saint_patricks_battalion_which_fought_for_the/

https://www.facebook.com/groups/mexicianamericanwar/posts/4114058445391037/


a957427c233eee15da6316cd880243db.png (600×523)

https://i.pinimg.com/originals/a9/57/42/a957427c233eee15da6316cd880243db.png


Great drawing of San Patricio uniform

https://www.facebook.com/photo/?fbid=647276054258862&set=a.423789213274215

Pin on Los Patricios

https://ie.pinterest.com/pin/619033911259626221/

One Man's Hero part 1
Movie on Mexican-American War. San Patricios (Tom Berrenger and Daniela Romo)

https://www.youtube.com/watch?v=N5KH6vB8dFI

Hm-m.
Interesting ones.
We thought more about Berdan sharpshooters.
Regards,

Strelets