Step 1: Recall the year directly:
1814 A.D. marks: Start of the Anglo-Nepal (Gorkha) War.
Step 2: Provide brief context:
The Anglo-Nepalese War began in 1814 between the British East India Company and the Kingdom of Nepal, ending in 1816 with the Treaty of Sugauli.
Final Answer:
\[ \boxed{\text{Start of the Anglo-Nepal (Gorkha) War}} \]