If your deceased spouse was a veteran who served at least 90 days of active military service, with at least one day during a war time period, you are entitled to VA benefits. These VA benefits range from home loans, to medical care to death pensions.
A little known program that both a veteran and the spouse of a deceased veteran can apply for is called the Aid & Attendance pension. You can qualify for Aid & Attendance and housebound VA benefits if you have limited income and assets. It requires providing the VA with proof of service and filling out the form perfectly; if you are approved, you receive a monthly check to help with you long term care costs, whether you are aging in place or in a private pay facility. These spousal VA benefits can exceed $1,000 per month and the benefit is yours, regardless of whether your spouse died in combat or three years ago of something totally unrelated to his military service.
The US Department of Veterans Affairs website tells widowed spouses just what they are entitled to receive from the VA.