What are the ranks of Martyrdom? What is Maqam of shaheed, and those who got the rank of Martyrdom other than doing Jihad are blessed with the same rank of those who martyr in a battle field? Are their sins are also removed?

A true martyr is of highest stage in the sight of Allah.
1. Highest heaven
2. Forgiveness of sins
3. No grief nor fear on the day of Qiyama.
4. They are forever blessed by Allah