Change date format to Month and Date

Question

How can I change this code to sum at the month level? For instance, DOL 2012-05-07 = May 2019. I think the fix needs to be Select Date of Loss line

select                  p.policyTerm                                                                                                                                                                                as  Term
                            , p.isRenewal                                                                                                                                                                                   as  IsRenewal
                            , ci.dateOfLoss                                                                                       as  DOL
                            , SUM(il.Amount)                                                                                                                                                                            as  NetIncurredLoss
                            
from                        (
                                    select                  ce.claimID                                                                                                                                              as  ClaimID
                                                                , 'Recoveries'                                                                                                                                          as  Type
                                                                , CAST(ce.paymentDate   as date)                                                                                                            as  TransactionDate
                                                                , ce.amount                                                                                                                                                 as  Amount
                                    from                        Aggressive.dbo.ClaimExpense                                                                                                             as  ce          with (nolock)
                                    where                       (ce.isExpense = 0 and ce.ExpenseType = 0 and ce.RecoveryType = 1)
                                                            or  (ce.isExpense = 0 and ce.ExpenseType = 0 and ce.RecoveryType = 2)
                                                            or  (ce.isExpense = 2 and ce.ExpenseType = 0 and ce.RecoveryType = 3)
                                    union all
                                    select                  crl2.claimID                                                                                                                                            as  ClaimID
                                                                , 'Gross Incurred Loss'                                                                                                                         as  Type
                                                                , CAST(crl2.addDate as date)                                                                                                                as  TransactionDate
                                                                , crl2.lossReserveChange                                                                                                                        as  Amount
                                        from                    Aggressive.dbo.ClaimReserveLog                                                                                                      as  crl2        with (nolock)
                                        where                   crl2.lossReserveChange <> 0
                                                            and crl2.claimID <> 1
                                    )                                                                                                                                                                                                   as  il
    left    join    Aggressive.dbo.Claim                                                                                                                                                                    as  c               with (nolock)
                    on  c.claimID                               = il.ClaimID
    left    join    Aggressive.dbo.ClaimIncident                                                                                                                                                    as  ci          with (nolock)
                    on  ci.claimIncidentID          = c.claimIncidentID
    left    join    Aggressive.dbo.Policy                                                                                                                                                                   as  p               with (nolock)
                    on  p.policyID                          = ci.policyID
group by            p.policyTerm
                        , p.isRenewal
            , ci.dateOfLoss