A battalion of the US army, marines, and air force in Vietnam got transported into a fantasy world, a world where magic and other fantasy creatures exist. However, for them, this is just the same shit, different world.

The title says it all

141 led by general shepard & his team & Army of operators took a break in japan till a gate open out of knowhere caused war on japanese soil. jdsf teams up with 141 to go to a new world.

A GATE to another world forced the Revolutionary Army and the Empire to come together in it's time of need. With the Minister Dead and Emperor missing beyond the GATE, Great General Budo calls for peace between the Revolutionary Army and the Empire. Night Raid and the soon to be Jeagers are forced to team up to go beyond the GATE to a new world and then they weren't the only ones that are at war against In our world was in the peaceful ways but there's still more trouble in the world due to terrorists who are trying to start more Wars which is being handled right now but terrorists are always hiding around the world so they can make their move but now it was peaceful after the War of 2042 Ended and then in a peaceful country located across the Pacific Ocean a neighboring country next to China Japan and In The City of Tokyo an 33 year old Off-duty Japan Self-Defense Forces (JSDF) officer and otaku, Youji Itami, is on his way to attend a doujin convention in Ginza, Tokyo when a mysterious portal in the shape of large gate suddenly appears. From this gate, supernatural creatures and warriors clad in medieval armor emerge, charging through the city, killing and destroying everything in their path. With swift actions, Youji saves as many lives as he can while the rest of the JSDF direct their efforts towards stopping the invasion including the United States Army and it's Non-Patriateds or No-Pats join in with the Japanese Ground Self-Defense Force to hold the attack Three months after the attack, Youji has been tasked with leading a special recon team, as part of a JSDF task force including a group of Non-Patriateds of The United States Army that will be sent to the world beyond the gate-now being referred to as the "Special Region." They must travel into this unknown world in order to learn more about what they are dealing with and attempt to befriend the locals in hopes of creating peaceful ties with the ruling Empire and meet new friends and foes

A Gate Appeared in Macragge and the sandera have foolishly attack the Ultramarine legion's homeworld and soon they will learn they mess with the wrong People

During One of their Battles Commander Ronan Belleza One of the Second in Command in the Ultramarine Legion Has Accidentally Swallowed by the Portal Again Leaving him to Fall to the World Of Fantasy World Again With this He Meets a Group of Adventurers and One in Particular have an Obsession of Killing Goblins And Due to his Experience with other Galaxy and Universe He is well Used to this And he is an Ultramarine For they all Bound to Adapt to Any Situation The Question is, How long will he Gonna Stay in this World Without Communication with the Rest of the Legion? And Let's Find Out about his Adventure with the Party of Goblin Slayer As he will become An Adventurer and his Might will be tell of his Achievement Disclaimer: I Do not Own Warhammer 40k Or Goblin Slayer They are Belong to their Respective Companies