Where a member of the armed forces is awarded an allowance under article 12(1)(a) in respect of unemployability and has not on the relevant date attained the age of 60, he shall be awarded an invalidity allowance at the appropriate rate specified in paragraph 6 of Part IV of Schedule 1.

Subject to the following provisions of this article, the relevant date for the purposes of paragraph (1) shall be the commencing date of the period in respect of which an allowance under article 12(1)(a) is awarded and, if there have been 2 or more such periods, the commencing date of the later or last of them.

For the purposes of paragraph (2), where a break between 2 periods in respect of which an allowance under article 12(1)(a) has been awarded does not exceed 8 weeks or the break is by reason of remunerative work where the member of the armed forces is one to whom subparagraphs (b) to (f) of article 12(3) apply, those periods shall not be treated as separate periods.

If the unemployability in respect of which the allowance is awarded forms part of a period of interruption of employment for the purposes of Chapter 1 of Part II of the Social Security Act 1975 or the corresponding provisions of the Social Security (Northern Ireland) Act 1975 which has continued without a break from a date earlier than the date fixed under paragraphs (2) and (3), the relevant date shall be the first day of incapacity for work for those purposes in that period.

The provisions of article 12(10), in so far as they provide for taking into account any benefit payable out of public funds under the law of any place outside the United Kingdom, shall apply to an allowance awarded under this article as they apply to a personal allowance awarded under that article.