Senjou no Valkyria, Shuumatsu no Izetta Recommendations
To mine eyes, Izetta is a love child of the game Valkyria Chronicles and Virgin Witch Maria. Valk Chron's alternate history World War 2 setting paired with a near extinct supernatural race/power and Maria's attempting to prevent/end a war as a witch with magic.
I strongly recommend everyone go play Valk Chron (unless you can handle the cheap art style + love triangle added to the anime!) and more people give Izetta a chance; overlooking the light yuri/boobing in the middle. That is all.
The setting of both anime is based on WWII
The story of both anime is a powerful large empire invading small neighboring nation/kingdom
Both anime have a powerful figure that belived to be the saviour of the nation/kingdom, on izetta = The White Magician/Witch, on valkyria = The Valkyrie
On both anime, it turned out that the main character is that powerful figure
The difference is the main character's role... on izetta, the main character role is as the princess of the kingdom, on valkyria, the main character is as the soldiers fightning on frontline
Both shows are based on the Second World War and mirror the tale of a single country's struggle to resist a powerful invader (i.e. France/Luxembourg vs. Germany). Both place significant emphasis on the military aspect of their stories, and both include a magical/supernatural element that greatly affects the tide of the war.
Note that while Shuumatsu no Izetta is decidedly blatant in the parallels it draws, Senjou no Valkyria is much looser with its comparisons, with far less stress placed on historicity. Another major difference is in how Shuumatuso no Izetta follows the life of a princess, while Valkyria tells its story through the perspectives of