The act of attacking an enemy unexpectedly from a concealed station. A concealed station where troops or enemies lie in wait to attack by surprise; an ambuscade. Troops posted in a concealed 1 Patch v. White, 117 U. S. 217-19 (1886), cases, Bradley, J. See also Senger v. Senger's Executor, 81 Va. 694-97 (1886), cases; Webster v. Morris, 66 Wis. 397 (1886), cases; 64 id. 355. Gilmer v. Stone, 120 U. S. 586, 588-90 (1887), cases, Harlan, J. In Hannen v. Moulton, 23 F. R. 5-11 (1885), a devise of 1,500 acres of land was held defective on account of a latent ambiguity. See generally 5 Am. Law Reg. 140-48 (1866), cases. 3 Ambulatory. L. ambulare, to walk or move about. * Coke, Litt. 112 b; 2 Bl. Com. 502; 4 Ves. 210; 10 id. 379; 143 Mass. 221; 1 Story, Eq. § 606 a. "Amend," in its most comprehensive sense, means to better. When a defendant is allowed to withdraw one plea or answer and to substitute another which rightly sets out his defense, it is a change for the better an "amendment." 3 Also, the writing or instrument made or proposed, which embodies the improvement. Used of the correction, proposed or actually made: of an error in the pleadings or proceedings in a pending cause; of changes in bills, statutes, and ordinances, by lawmakers; of alterations in charters and bylaws; of changes in constitutions. Material amendment. In pleading, such change in the substance of a party's case as destroys its former identity and occasions surprise (q. v.) in his adversary. At common law, proceedings being in fieri till judgment, the courts allow amendments up to that point. After judgment enrolled, no amendment is permitted at a subsequent term; for only during the first term is the record in the breast of the court.4 See further RECORD, 2. An indictment, being a finding upon the oaths of the grand jury, can be amended only by their consent. See INDICTMENT. Allowing amendments is incidental to the exercise of all judicial power, and indispensable to the ends of justice. Usually to permit or refuse any particular amendment rests in the discretion of the court; the result is not assignable for error.5 An appellate court will regard as made such amendment to a verdict as should have been made in the court below. A bill in equity may be amended, when found defective in parties, in prayers for relief, or in the omission or mistake of some fact or circumstance connected with the substance of the case, but yet not forming the substance itself, or for putting in new matter to meet the allegations in the answer. That is to say, by amendment the plaintiff may not make a new bill." 1 Dale County v. Gunter, 46 Ala. 142 (1871), Peck, C. J. 2 F. amender: L. emendare, to free from fault. 3 [Diamond v. Williamsburg Ins. Co., 4 Daly, 500 (1873), Daly, C. J. 43 Bl. Com. 407-8. 5 Tilton v. Cofield, 93 U. S. 166 (1876); International Bank v. Sherman, 101 id. 406 (1879); Tiernan v. Woodruff, 5 McLean, 138 (1850), cases; 11 F. R. 781; 13 id. 653-55, cases; 132 Mass. 194. Shaw v. North Penn. R. Co., 101 U. S. 567 (1879). * Shields v. Barrow, 17 How. 144 (1854): Story, Eq. Pl. § 884.