Complex sentence: He resigned when the Government fell from power in November 1830, and having lost his seat in Parliament at the 1832 general election, he became Commander-in-Chief of the North America and West Indies Station in December 1832.
Split into simpler sentences: He resigned when the Government fell from power in November 1830. He lost his seat in Parliament at the 1832 general election and became Commander-in-Chief of the North America and West Indies Station in December 1832.