Character Customization is not out yet, but it exists as a greyed out tab in the game. I assume this will change. That said the current map is as stupid as this is and the comments in this thread. I would go through and rebuttal half the bogus history about proportions of African combatants, but it seems easier to just attribute it to lack of understanding of the size of armies at this time.

The Mesopotamia and Palestinian theater of WW1, because jack fucking shit of it happened in the Sinai Peninsula and no one has ever called it this outside of Lawrence movies, started with 5,000 Indian troops (British 16th Brigade) vs 5000~ Turkish (Riflemen and mostly irregular) troops. Within months the 6th Division (again, Indian in generally fighting force but predominately commanded by White English Officers) reinforced them and was lost to the Ottoman. (So about 40,000 men in total lost). Skip forward to the end of the War, and you still have about 92,000 dead British Indian Army (so, mostly brown) men and a very large and unknown amount of Turkish dead with another 40k prisoner. The full strength the British Empire in the region during 1918 was 414,000 men and of the 112,000 combat troops in that number a large portion (70,000~) were Indian or Anzac. In this regard the game is incredibly accurate. In the desert there would be white men, but they would not be fighting on the front. They would be piloting or more likely commanding. (TDLR of this section is that WWI desert fighting started and ended mostly brown)

The actual map is the biggest fucking farce to me because there are thousands of military history maps they could have had a grand time recreating but instead they did this shit-hole. Product Managers? Who controlled this? I did some looking through some of my books and its like they took the sandstorms from outside El Arish, the trains from around Dera and then the terrain from Amman. These are ~400 miles apart and separated by water.

That said, despite great and lengthy contributions by the British Indian Army the entire theater of war was indeed every bit the "Sideshow" it was called then by comparison to the European fronts who's death toll, army sizes and all around brutal dehumanizing tactics dwarfed it. Germany suffered a literal blow to their population. Frances mobilized armed forces suffered 73.3% casualties. Put the numbers above into perspective with 37,466,904 casualties in armed forces alone. Not civilian or Spanish influenza related.