What is Flander's significance in relation to the First World War?

Flanders was a location of brutal submarine warfare. The three battles of Ypres claimed hundreds of thousands of lives.

Flanders was a location of brutal trench warfare. The three battles of Ypres claimed hundreds of thousands of lives.

Flanders was a location of brutal tank warfare. The three battles of Ypres claimed hundreds of thousands of lives.

Flanders was a location of brutal trench warfare. The three battles of Ypres claimed hundreds of millions of lives.

Flanders was a location of brutal submarine warfare. The three battles of Ypres claimed hundreds of millions of lives.

Flanders was a location of brutal tank warfare. The three battles of Ypres claimed hundreds of millions of lives.

Flanders was a location of brutal trench warfare. The three battles of Ypres claimed hundreds of thousands of lives.