Add punctuation: Themed evenings are organised regularly
A: Themed evenings are organised regularly.

Add punctuation: Since the Flotilla was moved to the Mediterranean Adolf Lderitz came to the newly formed 8 SFlotilla in November 1941
A: Since the Flotilla was moved to the Mediterranean, "Adolf Luderitz" came to the newly formed 8. S-Flotilla in November 1941.

Add punctuation: The inventory will match the existing structure and maintain the lush expression of the perennial beds and trees
A:
The inventory will match the existing structure and maintain the lush expression of the perennial beds and trees.