This is the Jerusalem cross, also known as the Crusader cross: square (unlike the more usual elongated versions of the Christian symbol), and with a smaller square cross in each of the four quadrants.
This very same cross has been in the limelight recently, emblazoned far, far larger than King Edward VIIs version on Pete Hegseths chest. Hegseth, a Fox News anchor and former member of the National Guard, is Trumps pick for secretary of defense. Its by no means his only tattoo. He also has a Chi-Rho, the first two letters of the Greek word for Christ and one of the earliest forms of a so-called Christogram (letters formed into a monogram expressing the essence of the religion). Perhaps the most contentious is the Christian expression on his bicep: Deus Vult, meaning God Wills It, believed to be a Crusader battle cry. Τhere is another cross with a sword, referencing a verse in the Gospel of Matthew reporting the following words of Jesus: Do not suppose that I have come to bring peace to the earth. I did not come to bring peace, but a sword. Yeshua, Jesus name in Hebrew, can be read across his elbow. All these Christian-related symbols, words and letters are accompanied by others that draw on American history and identity: the U.S. Constitutions famous opening phrase We the People, the year 1775 in Roman numerals (the year the American War of Independence started), a Join, or Die snake from the American Revolution (from a cartoon attributed to Benjamin Franklin, urging the then-colonies to unite), an American flag with an AR-15 rifle, a pair of crossed muskets, a circle of stars and a patch of his regiment, the 187th Infantry.
https://newlinesmag.com/essays/pete-hegseths-tattoos-and-the-crusading-obsession-of-the-far-right/