Reserve Duty during the First Year of Marriage

[From Iturei Yerushalayim #26]

Question: Is a groom within the first year of marriage exempt from reserve duty?
Answer: The basic Halachah is that he is obligated to serve, since we are involved in an obligatory war and in an obligatory war everyone goes out to war including a groom from his room and a bride from her chupah (Rambam, Hilchot Melachim 7:4). Today's situation is defined as an obligatory war both according to the Rambam, that it is a war which protects the Nation of Israel (ibid. 5:1), and according to the Ramban, that we are liberating our Land and protecting it (Positive mitzvah #4 in additions to Rambam’s Sefer Ha-Mitzvot). Although the groom is obligated, if he can be exempted from reserve duty it is certainly good. Ha-Gaon Ha-Rav Shlomo Goren ruled this way and says that he can request an exemption from his commanding officer. If he agrees – great, but groom may not demand it. There are two opinions among the Rishonim (early commentators) as to why a groom in exempt from army service during the first year:
1. According to Rashi, if he is killed in battle, it causes horrible anguish. Although the death of every soldier in a tragedy, this is an even greater one.
2. According to Rabbi Yitzchak Abarbanel, the newly-marriage soldier will be preoccupied thinking about his wife and will not be able to fight as he needs.
While both of these reasons would seem to exempt the groom from an obligatory war, because of its importance, the need to serve overrides these reasons. But if there is a legal possibility through which the groom/soldier can be released from reserve duty during the first year it is certainly good to do so.