was ever considered by this court,” Davis wrote, “nor one which more nearly
concerns the rights of the whole people; for it is the birthright of every Ameri-
can citizen when charged with crime to be tried and punished according to
law....Ifthere was law to justify this military trial, it is not our province to in-
terfere; if there was not, it is our duty to declare the nullity of the whole pro-
ceedings.”
54
Davis referred to key provisions of the Constitution protecting the
rights of those accused of crime: the freedom from unreasonable search and sei-
zure guaranteed by the Fourth Amendment; the right to a grand jury indict-
ment guaranteed by the Fifth Amendment; the right to due process of law, as
guaranteed by that same Fifth Amendment; the right to a speedy and public
trial by an impartial jury, as guaranteed by the Sixth Amendment; and the
right to be tried by a jury, as guaranteed by Article III, Section 2.
55
Davis noted the difference between a suspension of the privilege of the
writ of habeas corpus (as had occurred in Ex parte Merryman) and a trial and
conviction by a military commission. If the privilege of the writ has been val-
idly suspended, the government is not required to produce an arrested person
in answer to a writ of habeas corpus. But the “Constitution goes no further,”
Davis said. “It does not say, after a writ of habeas corpus is denied a citizen, that
he shall be tried otherwise than by the course of the common law.” Even if the
writ is suspended, an accused person cannot be tried, convicted, and punished
unless he is first accorded his constitutional rights of trial by jury and due pro-
cess of law.
The law permits an exception when “martial law” has been validly de-
clared. Martial law can be declared in cases of foreign invasion or civil war, Da-
vis said, if “the courts are actually closed, and it is impossible to administer
criminal justice according to law.” But martial law is proper only “where war re-
ally prevails,” where “there is a necessity to furnish a substitute for the civil au-
thority...topreserve the safety of the army and society.” In such a case, as “no
power is left but the military, it is allowed to govern by martial rule until the
laws can have their free course.”
56
There was no war in Indiana when Milligan
was arrested, and the courts were open and functioning. Under those circum-
stances, trial by a military commission was neither necessary nor constitution-
ally permissible. Davis continued with a memorable statement, one of the
“thunderously quotable” phrases that, when uttered, take on an importance be-
yond their literal meaning.
57
He wrote:
Lincoln and the Court
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258