The US military can exempt from service those who are religiously or morally opposed to violence. But conscientious objector status won't help soldiers who disagree with specific lawful orders.
There is a long line of military heroes who had the moral courage not to follow immoral orders. In the days ahead, some may have to consider what exactly their oath to the Constitution requires.
Social psychiatry has fallen from favour. It's time to revisit it.
Army physicians are turning to drugs approved for other conditions or newly developed treatments such as the antiviral Remdesivir to treat infected personnel.
There is plenty the military could do to help protect public health, such as by helping with supply logistics and providing workers to do important tasks – including health care professionals.
The National Guard may be the least understood branch of the US military. A National Guard attorney and military law professor explains how it works.
A commission looking at the future of service is set to makesits recommendations. It is hoping to make a year of service 'a norm' for all Americans. What does it mean to serve?
If President Donald Trump were to start a conflict, many Americans would likely view as it a misguided effort. What would that mean for the troops?
The US could be losing a key ally to China. But it has less to do with Trump's foreign policy and everything to do with a drug war in the Philippines.
Iraq has asked the US to start withdrawing troops. If it doesn't, that's a breach of international law.
No 'blue wall of silence:' A military lawyer explains why the US armed forces take accountability and justice seriously.
When the US entered World War I in 1917, military chaplains catered to majority white and Christian soldiers. Today the armed forces recognize over 200 denominations and religious groups.
The US defense community is coming to understand that AI will significantly transform, if not completely reinvent, the world's military power balance.
How much the leader's death might hinder the reemergence of IS greatly depends on how quickly its next leaders can be tracked down and dealt with.
For children born in the shadows of overseas US military bases to local women, their citizenship status has long been contested.
Tensions in the Gulf are a stark reminder of the choices ahead for the UK on security cooperation after Brexit.
The Pentagon has been instructed by the House of Representatives to investigate whether ticks were infected with Lyme disease by the US military.
If the US military were a country, its carbon emissions would rank between that of Peru and Portugal.
A showdown with Iran over some oil tanker attacks in the Persian Gulf could push the US into its next Mideast war, writes a scholar of military aggression.
A new strategy for U.S. Cyber Command seeks to block enemies from achieving their objectives – but may not be successful, and could have unforeseen consequences.