Service pension benefits are available for wartime veterans and spouses of wartime veterans.
The benefits are generally tax free, and the amount of the benefit depends on a number of factors, including but not limited to income, unreimbursed medical expenses, assets, and the nature of your disability. (The VA presumes that those veterans over the age of 65 have some qualifying disability.)
The amount starts at over $1000 per month (for a single veteran) and increases based on dependents, whether the veteran or spouse is housebound, and whether help with ADLs (activities of daily living — e.g. dressing, feeding, transferring from bed, toiling) are needed. The actual amount ultimately depends on your non-reimbursed medical expenses, income, assets, and other factors.