Virtually any photograph can be improved in some way or other. If the photo is badly damaged, like the soldier one above, there needs to be enough good image that can be used to rebuild the damaged areas.
With the creases across his trousers we can use the trouser details above and below the crease to recreate the area. Where the top corner is torn off there is enough building detail further down the street that can be used to recreate the corner detail. If the detail is not available within the photo you may have another photo where we can extract data to repair or enhance your photo. If there is a telegraph pole sticking out of the top of someone’s head or unwanted people in the photo, these too can usually be removed.