Locking spear by spear, shield against shield at the base, so buckler leaned on buckler, helmet on helmet, man against man.

[Φράξαντες δόρυ δουρί, σάκος σάκεϊ προθελύμνῳ·
ἀσπὶς ἄρ’ ἀσπίδ’ ἔρειδε, κόρυς κόρυν, ἀνέρα δ’ ἀνήρ.]

Homer (fl. 7th-8th C. BC) Greek author
The Iliad [Ἰλιάς], Book 13, l. 130ff (13.130-131) (c. 750 BC) [tr. Lattimore (1951)]
    (Source)

The Greek phalanxes awaiting Hector and the Trojans. Alt. trans.:

An iron scene gleams dreadful o'er the fields,
Armour in armour locked, and shields in shields,
Spears lean on spears, on targets targets throng,
Helms stuck to helms, and man drove man along.
[tr. Pope (1715-20)]

Spear crowded spear,
Shield, helmet, man, press’d helmet, man and shield
[tr. Cowper (1791), ll. 162-63]

Spear close by spear, and shield by shield o’erlaid,
Buckler to buckler press’d, and helm to helm,
And man to man.
[tr. Derby (1864)]

And spear on spear made close-set fence, and shield on serried shield, buckler pressed on buckler, and helm on helm, and man on man.
[tr. Leaf/Lang/Myers (1891)]

They made a living fence, spear to spear, shield to shield, buckler to buckler, helmet to helmet, and man to man.
[tr. Butler (1898)]

Fencing spear with spear, and shield with serried shield; buckler pressed on buckler, helm on helm, and man on man.
[tr. Murray (1924)]

Spear by spear and shield by shield in line with shield-rims overlapping, serried helms, and men in ranks packed hard.
[tr. Fitzgerald (1974)]

A wall of them bulked together,
spear-by-spear, shield-by-shield, the rims overlapping,
buckler-to-buckler, helm-to-helm, man-to-man massed tight.
[tr. Fagles (1990), ll. 1154-56]

Spear by spear was protected, and shield by shield overlapping; buckler on buckler and helmet on helmet and man against man pressed.
[tr. Merrill (2007)]