J.,
Another alternative may be a live in au pair. They can work up to 45 hours a week and since they live with you can be flexible on hours each week. That way you have someone committed to help you the whole year your husband is away. They can be responsible for everything kid related from laundry, cooking to taking them to school. When my daughter was an infant I had an au pair from New Zealand. I consider it one of the best decisions that I made for her. We still keep in touch and plan to visit when my daughter (in my mind) can handle a 15 hour flight. The cost was about $14,000 for the year. High for one child, but becomes reasonable for families that have more 2 or more in day care.
May your year move swiftly and your husband return safely.