If Japan won WWII, why would they write from right to left and in kyujitai form?

Can someone please expound the following comment based on the screenshot below? I don’t speak Japanese, so please forgive my benightedness. How does Japan’s imaginary winning World War II affect Japanese’s

1. written word order?

2. kyujitai form?

0:22 the Japanese on the soldiers’ hats were written from right to left and in kyujitai form (國 instead of 国). Such changes would’ve never happened had Japan not been defeated as seen here. I love the attention to details in this show.