I'm not sure if you mean to bury the flag with the Aron, or to momentarily drape the Aron with it, and then take it off. If the latter, I don't see any problem-- it is an honor to this man (or woman) to note the service he gave to his country, and to have the government express its appreciation for that service.  In general, the eulogies at the funeral are all considered a matter of the honor of the deceased (as opposed to shiva, which also has a mourner-centric component). So, for example, a person can ask to have no eulogies said for him, but if s/he requested that shiva not be sat, we would not obey the request.  Similarly, even though we prefer to hold the funeral as soon after passing as possible, we will delay funerals for a short time if that will allow more people to attend the funeral, for the honor of the deceased.

 

Here, too, the draping would seem to be a great honor for the deceased, and could go forward (unless he or she explicitly asked for it not to happen).  As for burying draped in the Aron, I think that would be a different matter, but I don't think that's what we do, anyway, so we can discuss that another time.

There is nothing inherently wrong with draping a casket with an American flag prior to and during a funeral service from a Jewish perspective. While there are rules about how the type of materials used for the casket (preferably, a plain pine box), I would say that the practice of covering the casket falls into the category of minhag, custom. Customs differ from place to place and often depend on context. In some Jewish communities a plain material cover is placed on the casket. This cover will have verses from the Bible or Jewish symbols on it such as a Magen David. While such a cover was not required, it is permissible to use such a cover.

Military funerals have taken place in a Jewish setting for decades and the practice of draping an American flag on the casket is a common practice, today among rabbis of all movements. While some rabbis discourage burying Jewish service members in military cemeteries, and some may refuse to officiate at a funeral that takes place in a non-Jewish cemetery because there are many Jewish laws and customs governing the burial of Jews separately from non-Jew, burying someone in a Jewish cemetery with military honors is different.

In correspondence, the chair of the Conservative Movement’s Committee on Jewish Law and Standards has suggested that rabbis ask that the military elements of the funeral be separate from the Jewish elements because “we do not combine war and religion,” but again, this is a suggestion and not a law. (1997) Rabbi Harold L. Robin, director of the Jewish Chaplains Council about all of these issues and he said, "In short there is no aspect of a veteran’s funeral that would [necessarily] conflict with Jewish rites or halakhah and no need for compromises." (www. myjewishlearning.com/ask_the_expert/at/Ask_the_Expert_Military_Funerals.shtml)

It is interesting to note that military honors were accepted by all the clergy of all denominations during the Second World War, when Reform, Orthodox and Conservative military chaplains worked together to address issues about how such funerals were to be conducted as well as other questions of religious concern. Apparently, a generation or two ago there still was an understanding among American Jews that there is room for diversity and respect regarding different practices in our community.

From my perspective, those who have served our nation deserve to be recognized and honored as part of their funeral service if they so wish or if their families express a desire for such a ceremony. The flag, simply draped over a casket, and its presentation, to the next of kin with the playing of taps is a deeply moving ceremony that does not subtract from the ‘religious service.” I have found that the military personnel who show up for this ceremony are always flexible and respectful of our traditions and are willing to do whatever the rabbi or family aspects of them.  As my colleagues have written, we believe that dina d’malkhuta dina, that “the law of the land is the law for all citizens,” is very much in in keeping with Jewish ethical and spiritual values.

I have officiated at many funerals – some had military honors, and some did not – where the family proudly draped the United States’ flag on the casket of their deceased veteran. These families are proud of their loved one’s service to their country, and with the Rabbi's help are able to mesh both military and religious ritual together. Those involved in planning a service for a loved one should definitely speak to their Rabbi about how best to carry this out.

 

The flag is usually placed on the casket prior to the start of the funeral ceremony, and then removed just before the burial process begins. Where there are military honors to be offered, there is an honor guard who formally removes the flag, folds it crisply, and presents it to the family. It is a very appropriate honor.